This is a Genuine Manufacturer Sourced replacement part used on some Dewalt Framing Nailers. This Assembly includes a new valve, trigger and o-rings. If your tool is leaking air or the trigger valve is stuck, replacing this part may resolve the issue.
Troubleshooting
This part works with the following brands:
DeWALT
This part works with the following products:
Nailer
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Customer Part Reviews
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4.8
Average Rating (out of 5):
★★★★★
★★★★★
(4 Reviews)
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★★★★★
★★★★★
Quick repair
Great parts. Easy repair. Nailer works, again. Thanks!
Guest - April 21, 2020
Verified Purchase
★★★★★
★★★★★
Quick fix with an exact match part
The new trigger valve fixed this nailer that was continually dry firing without touching the trigger.
Guest - September 20, 2021
Verified Purchase
★★★★★
★★★★★
It worked great! I will be ordering from you again no dealt. Thank you
The instructions we spot on the part fit perfect.
Guest - August 23, 2022
Verified Purchase
★★★★★
★★★★★
Rapair was an easy one, had no problems everything fit well and worked like new after repair.
New part all fit excellent there was an upgrade to this repair, which I was explained in a note included with part, all went well great job.
Guest - June 5, 2019
Verified Purchase
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Punch out the pin holding the trigger and the two pins holding the trigger valve assembly. Place a rag over the trigger valve assembly and connect pressurized air line to the nailer to dislodge the assembly. Oil o-rings on new assembly and insert carefully. replace trigger and pins. I would suggest cleaning all the dirt and grime away fro
... Read morem the trigger area before taking it apart.
1. remove nail track/feed using T-25 torx
2. use pin punch to drive out roll pin(s) holding trigger assembly
3. pull/blow out old trigger
4. apply light coat of silicone grease to new trigger O-rings
5. gently/carefully insert and seat new trigger (do not force, be careful not to cut O-rings)
6. reinsert/pres
... Read mores roll pin(s) back in
7. re-attach nail feed guide
8. attach air supply, check for leaks, test ---- you\'re done [hopefully]
Removed the pins with a small punch and hammer. Took out the trigger and trigger valve, inserted the new one, and replaced pins. Cleaned everything before replacing new parts. Works like a charm. Thanks guys. Sure beats buying a new one!
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Nailer would not fire, leaked air from trigger when pulled
Punch out pins that holds trigger in, pull out old trigger, may need pliers, oil hole put new trigger in. The black o rings will last but the clear o rings will not, be sure to use the recommended oil for your gun, the wrong oil can damage your o rings.
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Gun stopped working. Took it apart, noticed many O-rings got over heated and stretched or ripped
Replaced stretched O-rings (from heat), Replaced Trigger Valve (from heat and dirt), Cleaned dirty oil and metal fragments out of the inside of gun. Works as brand new. Make sure to check all O rings. If any are out of place, pinched, or stretched, it will stop your gun from working.
1. Printed schematic to show parts orientation and location
2.Used punch to remove trigger pin and 2 spring pins holding valve in place.
3. Old trigger came right out, but had to use needle nose pliers to pull out valve. Came out in 2 parts, inner valve spring also popped out to my surprise.
4. Fitting new in took a fe
... Read morew tries, schematic helped to show orientation.
5. Back together no problem.
6. To do O rings, opened back of gun and plunger came right out. O ring change there just off-on.
7. Used 2x4 as stop to bang gun body hard to release inner workings.
8. First O ring was easy to access and find on schematic, but ring was VERY gummy, more gum than solid, scrapped off and easy replacement. But what grease to use??? None included with 2 O rings purchased, recommended grease listed for $63 for 3 oz.!!??!! Use silicone instead, but could not find any assistance on this!!!
9 Second O ring much harder to access. Had to remove spring and retainer, spring stop and slide back part. This O ring also all gum and noted 3rd O ring also gum. Had to order 3rd and now waiting for delivery. Job not done, but did reassemble, just not tighten screws.
Easy fix for saving my lightly used vintage 2008 Dewalt nailer. Simply disassemble the unit, laying all your parts out in order, making note or taking photos of how the components break out. Install the seal kit as per the labeled instructions, matching up the proper o-ring to its designated spot by use of the printed guide that comes w
... Read moreith the kit. Lube and oil generously. On a scale of 1 - 10, I\'d rate this a 3 on level of difficulty.
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Dewalt nailer had a blown o ring and I went ahead and put in the full set and a trigger assembly.
Pretty much plug and play, follow the instruction set that these guys included at no extra cost.
the gun works like the day it was purchased, Thanks again Dick A.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP10177986
Manufacturer Part Number: 5140095-73
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
